Safety razor



March 10, 1925. 1,529,481

' J. s. GULLBORG SAFETY ,RAZ OR Filed Nov. 5, 1922 Patented Mar. 10, 1925.

UNITED, sTArEs JOHN S.- GULIJBOBG, OF CHICAGO; ILLINOIS.

SAFETY RAZOR.

Application filed November 3, 1922. Serial No. 598,764.

To all whom it may concern:

Be it known that I, JOHN S. GULLBORG, a citizen of the United States of America, and a resident of Chicago, county of Cook,

and State of Illinois, have invented a new and useful Improvement in Safety Razors, of which the following is a specification.

This invention relates to safety razors of the type wherein the blade is mounted for reciprocation across the guard formed by the toothed edge of the supporting member or razor head.

The main objects of this invention are to provide an improved construction and arrangement of a reciprocating carriage to which the blade is to be clamped; to provide an improved construction and arrangement of clamp for detachably securing the blade to the carriage; to provide improved mechanism for reciprocating the carriage relative to the support so as to cause the blade to traverse the guard; and to provide improved means .for securing the blade against any variation from its path along the guard.

An illustrative embodiment of this invention is shown in the accompanying drawings, wherein Figure 1 is a side elevation of a razor embodying this invention.

Figure 2is a front elevation of the same.

Figure 3 is an enlarged rear elevation of the razor, with part of the handle broken away.

Figure 4 is a vertical transverse section taken on the line 44 of Figure 8.

Figure 5 is an enlarged front elevation of the razor, with the handle removed.

Figure 6 is a front elevation of the reciprocating carriage to which the blade is to be clamped. I

In razors of the above type heretofore in use, the reciprocating blade has been mounted in direct contact with the supporting member or razor head, and, therefore, the clamping of the blade has resulted in either binding of the blade through its friction with the head, or in considerable play between the reciprocating part and the head. A razor embodying the present invention includes a blade firmly clamped to a carriage reciprocatingly mounted 011 the supporting member. The mounting of the carriage is such that it is secured against movement transversely to the plane of the blade, thereby overcoming the above-mentioned objectionable features of priorconstructions.

In the specific form herein shown, the

razor comprises a supporting member or head 1, on which is mounted a reclprocatmg carriage 2, to which a blade 3 is clamped and which is moved back and forth on, the supporting member by reciprocating mechanism 4:. A-handle 5 of suitable construction is secured to the head 1. i

' Referring to the drawings, the supporting member 1 has its' forward part inclined downwardly with respect'to the axis of the handle 5, and its outer edge is formed to provide an upwardly projecting toothed 7 guard 6. Extending upwardly from the base or rear part of the supporting member 1, is a pair of lugs 7 arranged to form a sad dle for supporting the carriage 2 and reciprocating mechanism 4:.

In the form shown, the carriage 2 is disposed in substantially parallel spaced relation to the supporting member 1, and is arranged so as to locate the cutting edge of the blade 3, above and in close proximity to so the toothed guard 6. The rear part of the carriage 2 is of less width than the saddle,

so as to permit the carriage to freely reciprocate between the lugs 7. The rear edge of the carriage 2 rigidly'embraces a pin 8, which is 'slidably supported in" apertures 9 formed in the lugs '7. j 1 Extending downwardly from the forward edge of the carriage 2,'is a lug 10, projecting through a slot 11 formed in the supporting member 1, andhaving-s'houlders 12 and.13 which slidably engage'the upper and lower faces, respectively, of the supporting 'memher. 1 The coaction of the shoulders 12 and 13 with the shoulders formed by the upper and lowerfaces, respectively, ofthesupporting l member, secures the carriage'against movement transversely 'of its plane, so that a razor blade clamped on the' carriage is insured against variation from its path of reciprocation along the guard 6,

The forward edge ofthe carriage2 is blade to the carriage; carriage is such that the clamp moves back spaced inwardly from the toothed guard 6, so as to provide a pocket 14-. along the for ward edge of the supporting member for catching the lather which passes through the toothed guard when the razor is in use.

Arran ed'on the u er face-of the car riage 2 is a pair of studs 15'for engagement with apertures 16 formed in the blade 3.

The clamp which detachably secures the blade to the reciprocating carriage 2, is in the form of a clip 17, arranged above the carriage and having a pair of depending ears 18 for pivotally mounting the clamp on the pin 8. The forward part of the clip 17 forms a jaw for firmly clamping the blade on the carriage. The rear part of the clip 17 is bent downwardly to form a handle 19, whereby the clamp may be manually opened against the action of a spring v2O, to permit the release of the blade. As illustrated, the spring 20 is arranged in a a recess 21 formed in the rear edge of the carwage,

and embraces the pin 8. One end of the spring bears against the lower face of the carriage 2,. and its other against the handle 19, so that the clip is normally urged into position for clamping the The mounting of the and forth with the carriage 2, when the latter is reciprocated.

The reciprocating mechanism 4 includes a friction roller 22, similar in construction to that shown in Patent No. 1,417,988 issued tome on May 30, 1922. The roller 22 is provided with a knurled periphery and is rotatably supported in the saddle above the carriage 17 by stud screws 23 mounted in the lugs 7. Formed in the roller 22, is a cam groove 24:, arranged to coact with an upstanding pin or stud 25 carried by the carriage 2 and projecting through an opening 26 formed in the clip 17. The coaction of the pin 25 andcam groove 24 causes the carriage and clamp to reciprocate during the rotation ofthe' roller 22, thereby moving the blade 3 back and forth along the guard '6.

In operation, the razor is used in "the customary' manner, with the roller 22 engaging the face, thereby causing it to .roll,which imparts a reciprocating motion to thecaririage' and blade( The movement of the bladeback and forth along the guard results in a shearing action of the blade. 4

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the constructionshown may be altered or omitted without departing from thespirit of this invention as de fined by the following claims.

l claimz- 1. A safety razor comprising a supporting member having its outer edge formed to end bears vwardly of said provide a guard, a carriage reciprocatingly mounted on said supporting member for carrying a razor blade, said carriage being said carriage and supporting member, a lug struck out from said carriage at a substantially right angle thereto and slidab'ly engaging said supporting member for retaining said carriage in spaced relation thereto, mechanism for reciprocating said carriage, and a clamp for detachably securing arazor blade to said carriage. 3. A safety razor comprising a supporting member having its outer edgeformed to provide a guard, a carriage'reciprocatingly mountedon the upper face of said supportingmember for carrying a. razor blade, a

clamp for detachably securing the blade to said carriage, a friction roller mounted on said supporting member above said carriage, a cam onsaid roller, and a pin projecting upwardly from said carriage and extending through an aperture formed in said clamp so as'to be located in position to coact with said cam whereby said carriage is reciprocated during the rotation of said roller so as to cause the blade to move back and forth along the guard.

4. A safety razor comprising a supporting member having its forward edge formed to provide a guard, a pair-of upstanding spacedlugs on said supporting member rearuard' arranged to form a saddle, a pin sli ably mountedin saidsaddle and adapted for axial reciprocation, a blade carriage mounted on said pin and arranged in siibstaintially parallel spacedrelation to the upper faceof said supporting member to provide a pocket between said carriage and supporting member, a friction roller mounted in said saddle on an axis substantially parallel to the axis of said pin,

a cam on said roller, a clamp pivotally mounted on said pin andarranged between said carriage and roller, the forward end of said clampbeing adapted'to coact with the blade on said carriage, the rear end of said c'lamp projecting beyond said carriage and roller to form a handle whereby the forward end of said-clamp may be manu ally shifted away from said carriage to perinit the release of the blade therefrom, a spring embracing said pin and hearing against said handle for normally urging the forward end of said clamp toward said ear- 5 riage, and a stud on said carriage and projecting upwardly through an aperture in said clamp so as to be located in position to coact with said cam, whereby said carriage and clamp are reciprocated during the rotation of said roller so as to cause the blade to move back and forth along the guard.

Signed at Chicago this 28th day of Octoher, 1922.

JOHN s. GULLBORG. 

